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Use Selenium’s screenshot API after navigating to the page you want to capture. In Python, driver.save_screenshot("artifacts/example.png") writes a PNG of the current browser window and returns True when the write succeeds. Create the destination directory first, check that Boolean result, and always quit the driver in a finally block.
Python: save a browser screenshot to a PNG file
This complete example starts Chrome, opens a page, creates an artifacts directory, saves the visible browser context, checks Selenium’s return value, and closes the session even if navigation or writing fails.
from pathlib import Path
from selenium import webdriver
out = Path("artifacts")
out.mkdir(parents=True, exist_ok=True)
driver = webdriver.Chrome()
try:
driver.get("https://example.com")
ok = driver.save_screenshot(str(out / "example.png"))
if not ok:
raise OSError("Selenium could not write the screenshot")
finally:
driver.quit()save_screenshot(filename) saves the current window to a PNG. In Python it returns False for an I/O failure, so checking the result prevents a test or batch job from silently reporting success when no file was written. Use a filename ending in .png, and use an explicit path when your process may run from a different working directory.
Using the alternate file method
driver.get_screenshot_as_file("artifacts/example.png") performs the same file-oriented operation. It is useful when you prefer Selenium’s “get” naming convention; the documented file target is a PNG path.
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Capture screenshot data without creating a file
PNG bytes
Use get_screenshot_as_png() when another library, an object store, or an HTTP response should receive the image directly:
png_bytes = driver.get_screenshot_as_png()
with open("artifacts/example.png", "wb") as image:
image.write(png_bytes)Base64 for HTML or JSON
get_screenshot_as_base64() returns a Base64 string. Embed it in a data URL or put it in a response payload:
encoded = driver.get_screenshot_as_base64()
html = f'<img alt="Browser capture" src="data:image/png;base64,{encoded}">'Bytes avoid Base64’s size expansion when you control the transport. Base64 is convenient when the receiving format is text-only.
Java: capture with TakesScreenshot
Java exposes screenshots through the TakesScreenshot interface. The target can be a temporary file or a Base64 value. This example copies the temporary source file into a predictable destination and replaces an older file.
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import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.StandardCopyOption;
import org.openqa.selenium.OutputType;
import org.openqa.selenium.TakesScreenshot;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.chrome.ChromeDriver;
WebDriver driver = new ChromeDriver();
try {
driver.get("https://example.com");
File source = ((TakesScreenshot) driver).getScreenshotAs(OutputType.FILE);
Path destination = Path.of("artifacts", "example.png");
Files.createDirectories(destination.getParent());
Files.copy(source.toPath(), destination, StandardCopyOption.REPLACE_EXISTING);
} finally {
driver.quit();
}OutputType.FILE is appropriate for a normal artifact. Java also supports OutputType.BASE64 when the screenshot must remain text data:
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String encoded = ((TakesScreenshot) driver)
.getScreenshotAs(OutputType.BASE64);The interface can be implemented by a driver and by WebElements, so the same contract covers browser-level and element-level captures where the implementation supports it.
Capture one element instead of the whole window
Locate the component, then call the element screenshot method exposed by your language binding. In Python:
from pathlib import Path
from selenium import webdriver
from selenium.webdriver.common.by import By
driver = webdriver.Chrome()
try:
driver.get("https://example.com")
card = driver.find_element(By.CSS_SELECTOR, "main")
Path("artifacts").mkdir(exist_ok=True)
if not card.screenshot("artifacts/main.png"):
raise OSError("Element screenshot was not written")
finally:
driver.quit()Element capture is useful for a component regression test or documentation image because it excludes browser chrome and unrelated page content. The selector must identify the intended element, and the driver must support element screenshots.
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A regular save_screenshot call means the current window or visible browser context; it does not guarantee a capture of the entire document. Full-document behavior is driver-specific. Firefox’s Python API documents a dedicated method:
from pathlib import Path
from selenium import webdriver
driver = webdriver.Firefox()
try:
driver.get("https://example.com")
Path("artifacts").mkdir(exist_ok=True)
if not driver.get_full_page_screenshot_as_file("artifacts/full.png"):
raise OSError("Full-page screenshot was not written")
finally:
driver.quit()If you need full-page output on another browser, verify that browser’s Selenium driver capability rather than assuming Firefox’s method is portable. A fallback is to capture the visible viewport repeatedly while scrolling and stitch the images yourself, but stitching must account for fixed headers, overlapping regions, lazy-loaded content, and device scale.
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Make captures deterministic
Wait for the page state you need
driver.get() returning means navigation completed according to the browser’s load strategy, not that every application-rendered widget is ready. Use an explicit wait for a meaningful element before capturing:
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
WebDriverWait(driver, 20).until(
EC.visibility_of_element_located((By.CSS_SELECTOR, "main"))
)For charts, animations, or images, wait for the application’s ready condition. A fixed sleep can be acceptable for a deliberately timed visual effect, but explicit conditions usually reduce flaky tests.
Control viewport and scaling
Set a known window size before navigation when pixel dimensions matter:
driver.set_window_size(1440, 900)Headless and headed sessions can render different fonts, scrollbars, and device-pixel ratios. Pin the browser version and driver in continuous integration, install the same fonts, and avoid comparing captures produced under different scale settings.
Control dynamic content
- Dismiss or mask cookie dialogs when they are not part of the test subject.
- Disable rotating carousels and animations where your test environment allows it.
- Use stable test data and a fixed locale, timezone, and viewport.
- For lazy-loaded sections, scroll them into view and wait for their images before a full-document capture.
Common errors and fixes
No file appears
Confirm the parent directory exists, the process has write permission, and the path is resolved where you expect. Check the Boolean result from save_screenshot or the element method; do not ignore a False return.
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The image shows a blank or incomplete page
Capture only after the relevant element is visible and application data has loaded. Check that navigation did not end on an authentication, bot-check, or error page. In headless CI, verify window size and installed fonts.
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Only the viewport is captured
That is expected for a normal driver screenshot. Use a documented full-page capability for your driver, such as Firefox’s get_full_page_screenshot_as_file, or implement a scroll-and-stitch fallback.
Element capture fails
Wait for the element, ensure the selector matches one intended node, and check driver support for WebElement screenshots. An element outside the document or covered by a transient overlay may need scrolling or overlay dismissal first.
Java throws a file or path exception
Create the destination directory with Files.createDirectories, then copy the temporary OutputType.FILE result. Keep the driver alive until the copy completes.
Performance, reliability, and cost considerations
The official Selenium API references used for these methods do not publish a stable capture-time, success-rate, or image-quality benchmark. Treat screenshot cost as your browser session’s CPU, memory, storage, and execution time rather than relying on an undocumented speed figure. Reuse a driver for a controlled batch when isolation permits, but create a fresh session when cookies, local storage, or extensions could contaminate the next capture. Save artifacts with unique names in parallel jobs, and retain the URL, viewport, browser version, and test identifier beside each image so failures can be reproduced.
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Or skip the browser setup
For a hosted one-call capture, ScreenshotNeo accepts a URL and returns a PNG, JPEG, WebP, or PDF. It accepts the consent banner like a visitor and removes more than 60 known consent platforms, newsletter popups, and chat widgets before the shot; each cleanup step can be disabled. Bot checks and CAPTCHAs, blank pages, timeouts, failed loads, and cache hits are not billed, and response headers report the page verdict and billing status.
See the parameter reference in the ScreenshotNeo documentation. A cURL request is:
curl -G "https://api.screenshotneo.com/v1/shot" -d access_key=YOUR_API_KEY --data-urlencode url=https://stripe.com -o shot.webpPython:
import requests
r = requests.get("https://api.screenshotneo.com/v1/shot", params={"access_key": "YOUR_API_KEY", "url": "https://stripe.com"}, timeout=90)
open("shot.webp", "wb").write(r.content)Node.js:
const q = new URLSearchParams({ access_key: 'YOUR_API_KEY', url: 'https://stripe.com' });
const res = await fetch(`https://api.screenshotneo.com/v1/shot?${q}`);ScreenshotNeo also provides full-page and CSS-selector captures, dark mode, device presets or custom viewports, retina scale, PDF controls, custom CSS and JavaScript, click and wait actions, request blocking, headers, cookies, user-agent, authorization, timezone, geolocation, transparent backgrounds, resizing, configurable caching, signed image links, asynchronous jobs with signed webhooks, bulk capture for up to 100 URLs per call, a usage API, an OpenAPI specification, and an MCP server with take_screenshot, get_page_info, and capture_pdf for Claude, Cursor, and other MCP clients. Every feature is available on every plan. The Free plan includes 1,000 screenshots per month without a card; paid plans start at $5 for 3,000 screenshots, with yearly billing providing two months free. Create a free ScreenshotNeo account.
Quick decision guide
| Need | Best Selenium approach | Important limitation |
|---|---|---|
| Visible browser image | Python save_screenshot or Java TakesScreenshot |
Captures the current window/context |
| Element-only image | WebElement screenshot method | Requires driver and element support |
| Full document | Driver-specific full-page API | Support differs by browser |
| In-memory transport | PNG bytes or Base64 | Base64 is text and increases payload size |
Frequently Asked Questions
Can Selenium save JPEG or WebP directly?
The documented Python file methods and the Java file example produce PNG output. Convert the PNG with an image library if another format is required.
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No. Selenium captures when your command runs. Add an explicit wait for the page state your test requires.
Can I capture a screenshot before quitting the driver?
Yes. The capture and file or byte transfer must finish before driver.quit(); quitting first ends the browser session.
Why is my screenshot different in CI?
Browser version, fonts, viewport size, device scale, locale, animations, and data can differ. Pin those inputs and wait for stable content.
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